10 Jun Digestion in the body occurs chemically and mechanically
Question
1.Digestion in the body occurs chemically and mechanically. The digestive process starts in the mouth as the teeth grind the food and saliva adds digestive enzymes. The process continues in the esophagus aided by peristalsis.
In this passage, peristalsis is
the addition of pepsin.
the absorption of lacteals.
the production of bile.
the contraction of muscle.
2.How are the functions of vaccines and antibiotics different?
Vaccines cause an immune response to bacterial cells, while antibiotics seek out and kill viruses.
Vaccines cause a specific immune response to a virus, while antibiotics are nonspecific.
Vaccines cause a nonspecific immune response to a bacterium, while antibiotics are specific.
Vaccines cause an immune response to a virus, while antibiotics seek out and kill bacterial cells.
3.Which of the following describes the proper order of structures that a carbon dioxide molecule diffuses through after leaving the blood?
Alveolar space; surfactant layer; capillary wall
Capillary wall; alveolar space; surfactant layer
Alveolar space; capillary wall; surfactant layer
Capillary wall; surfactant layer; alveolar space
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